Give reason :-
1. Aluminum oxide is amphoteric in nature.
2.when a piece of Zinc is kept in copper sulphate solution, the blue colour disappear.
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Answer:
1) Cause it's react both with acid and base that's why it is amphoteric in nature
Explanation:
Al2O3 + 2NaOH= 2NaAlO2 + H2O
Al2O3 + 6HCl. =2 AlCl3 + 3H2O
In this above reactions it react with NaOH(base) & HCl(acid)
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